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¿ìè¶ÌÊÓƵ's popular Last Word series gives readers the opportunity to answer each other's questions about everyday science phenomena, from the shape of scones to the evolutionary history of toenails. To answer a question or ask a new one, email lastword@newscientist.com

2FWP497 Liquid iron molten metal pouring from ladle container into mold, industrial metallurgical factory, foundry cast, heavy industry background.

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Is it possible to have a high-tech society without iron? Part 2

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Coronal mass ejection 05/11/2018 3372 views 12 likes 402495 ID Like Download COOKIES To enable the sharing functionality, please accept all cookies. To adjust your cookie settings, click here. Details Related This image, acquired by the LASCO C2 coronagraph instrument on the ESA-NASA SOHO spacecraft, was taken 8 January 2002 and shows a widely spreading coronal mass ejection (CME) as it blasts more than a billion tons of matter out into space at millions of kilometers per hour. This C2 image was turned 90 degrees so that the blast seems to be pointing down. A second image, from the EIT disk imager on a different day was enlarged and superimposed on the C2 image so that it filled the occulting disk for effect. CREDIT ESA/NASA/Soho

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Would a powerful solar storm knock out electronics in planes?

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Close-up of construction bubble level.

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What does the angle of a spirit level mean relative to Earth?

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This week’s new questions

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This week’s new questions

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Issue no. 3533 published 8 March 2025

New Scientist issue 3533 cover
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